public class PositionNewEditOverrideExtension{
    // This simple extension is to demonstrate overriding the save function, and how to determine if the record
    //   should be updated or inserted during the save operation.  This extension could be used on both
    //   an Edit override and a New override simultaneously.
    
    // DATKINS - Declare a variable to hold the position.
    private Position__c pos;
    
    // DATKINS - Declare a Boolean variable to track if this is an insert or an update.
    private Boolean bUpdate;

    // Declare standardController controller
    private ApexPages.StandardController controller;

    // Declare a string property to hold a message value
    public String myMessage { get; set; }

    
    // DATKINS - Write the extension constructor and initialize the member position variable by using a method on the standard controller.
    // DATKINS - Then update the Boolean to store if this is a create or update
    //(DATKINS - Add the appropriate argument) 
    public PositionNewEditOverrideExtension(ApexPages.StandardController stdController) {
    	controller = stdController;
        this.pos= (Position__c)stdController.getRecord();
        bUpdate = pos.id == null ? false : true;
    }
    
    // This function is called from a commandButton on the page
    public PageReference SayHelloWorld(){
        // call this custom function from your visualforce page
        myMessage = 'Hello World!';

        // We're not redirecting the user to a different page so we just say return null
        return null;
    }
    
    public PageReference mysave(){
	//DATKINS - Override the save function.  Check to see if this is an insert or update and use the right DML command
	if(bUpdate){
		update pos;
	}
	else{
		insert pos;
		controller = new ApexPages.StandardController(pos);
	}
        //DATKINS - Then navigate using the standard controller.
		return controller.view();
    }
   
}